the table reference produces rows of not only that table but all of its descendant tables, unless the key word ONLY precedes the table name. However, the reference produces only the columns that ...
Nine years ago, when I began my second career as a columnist, one of my early stories was “Her Name Was Grandpa!” I authored two books and started each with the same story to introduce my Grandmother ...
A constraint is an SQL object that helps define the set of valid values in the table in various ways. There are two ways to define constraints: table constraints and column constraints. A column ...
I have been writing about my life and my town for a long time if you follow me on a regular basis. I have shared my travels and my thoughts, some appreciated and some have brought condemnation. It ...
As I write this column, fresh produce is overflowing on my kitchen counter. A watermelon threatens to roll off the table every time someone walks by. A bag of tomatoes awaits it fate after being ...